Table 2. Temporal components and demographic characteristics of blood donation and blood component transfusion series.

Article code	Trend	Seasonality	Gender	Age
1	Increased demand and decreased offer	---	---	Older people demanded more than the other groups
2	---	---	Men demanded more than women	Older people demanded more than the other groups (≥ 65 years demanded 42.6% of transfusions)
3	Increased demand and decreased offer	---	---	Older people demanded more than the other groups (≥ 65 years demanded 59% of transfusions)
4	---	---	Men donated more than women (65.4% of donations were made by men)	Youth group donated more than other groups (group 25-35 years made 35.5% of donations; group ≥ 55 years made 2.9% of donations)
5	Decreased offer	Among young people, peak in April and lowest between Sep and Nov; among the elderly, peaks in January and summer	Men donated more than women (57.4% of donations were made by men)	Youth group donated more than other groups (18-24 years)
6	Increased demand and decreased offer	---	Men donated more than women; women demanded more than men (56% of transfusions were performed on women)	Older people demanded more than the other groups (≥ 70 years demanded 46% of transfusions)
7	Increased demand of greater magnitude than increased supply.	---	Men donated and demanded more than women	Youth group donated more than other groups (group 17-35 years)
8	Increased demand and decreased offer	---	Men donated and demanded more than women	Youth group donated more than other groups (group 20-29 years); older people demanded more than the other groups (≥ 60 years)
9	Increased demand and decreased offer	---	Men donated more than women	Youth group donated more than other groups; older people demanded more than the other groups (≥ 65 years)
10	Increased demand and decreased offer	---	Men donated and demanded more than women (52% and 54.2% respectively)	Youth group donated more than other groups (group between 20 and 44 years made 30.9% of donations); older people demanded more than the other groups (≥ 65 years required 47% of transfusions)
11	Stationary series	Lower in weeks with holidays	---	---
12	Increased demand and decreased offer	---	---	Older people demanded more than the other groups
13	Increased demand and decreased offer	---	Men donated and demanded more than women (57.3% of transfusions)	Youth group donated more than other groups (18-24 years); older people demanded more than the other groups (≥ 65 years required 48% of transfusions)